FAQ&colon;1&period;How do you ensure product quality&quest;Power-meter has a complete quality control system&comma; products are 100&percnt; pre-inspected by IQC&comma; OQC departments before ship to our clients&period;2&period;What's your delivery time&quest;Small orders finished within 7 working days&semi; Bulk orders finished within 15 working days&period;Urgent order&comma; expedited production could be arranged after negotiation&period;3&period;What's your MOQ&quest;No MOQ&comma; 1 piece for test at first is acceptable&period;4&period;What's your production capacity and can you offer free samples&quest;POwer-meter has production capacity of 100000 pieces per month&period; Free samples Could be provided&comma; but the cost should be paid at first&comma; returned after bulk order confirmed&period;5&period;What detailed information do we need to provide before placing an order&quest;

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6&period;What types of payment terms and trade terms can you accept&quest;Payment terms&colon;TT&comma; Western Union&comma; Money Gram&comma; paypal&comma;etc&semi;Trade terms&colon; ExW&comma; FOB&comma; C&F&comma;CNF&comma; etc&period;7&period;How long is your product warranty&quest;Power-meter offers 12 months warranty for all of our products&period; Customers will enjoy free repair services for failures found within the warranty due to manufacturing quality&period;We Promise that your any inquiry would get our prompt attention and reply &excl;

Tips 1 &colon; How to Buy a Pressure GaugeSelecting the appropriate Pressure Gauge can be challenging&comma; particularly when you don't have a part number and when you have already tossed the old gauge&period; The following step-by-step guide will walk you through the basics of selecting a pressure gauge&period; Once you have determined the type of gauge use the Gauge Finder to purchase a pressure gauge&period;STEP 1&colon; Pressure Range &lpar;PSI&rpar;The first thing you need to know when purchasing a pressure gauge is what pressure range &lpar;pounds per square inch&comma; or "psi" is standard&rpar; you need&period; Since the accuracy of most pressure gauges is best in the middle third of a gauge&comma; you should always select a gauge with a range that is about twice your normal operating pressure&period; For example&comma; if you have an air compressor with a normal working pressure of 50 psi you want to select a gauge with a 100 psi range&period;The rule of thumb with pressure gauges is that when the operating pressure of the system is normal&comma; the needle should be pointing straight up or in the "twelve o'clock" position&period; This makes the gauge easier to read at a glance - if the pointer is straight up&comma; things are normal&period; Gauges are most accurate in the middle third of their range&comma; so you'll also get a better measurement at your most typical pressure&period;If you cannot find a gauge at exactly twice your working pressure&comma; go to the next step up&period; For example&comma; if you want a 160 psi gauge and it is not in stock&comma; a 200-psi gauge can be substituted&period; If the range is too low and the gauge is over-pressurized it will break&period; You want some room to spare at the top of the scale so that if your pressure goes above normal&comma; it won't damage the gauge&period;STEP 2&colon; Dial SizeDial size refers to the diameter of the circular face of the gauge&period; The easiest way to choose a size is to measure the diameter of your old gauge&period; Our gauges range in dial sizes from 1-inch for tight spaces to 10-inches for reading from a distance&period; When selecting a gauge choose one that fits within the physical space available and a gauge size that is easy to read where you have it installed&period;If dial size is not important to you we recommend selecting a 2-1&sol;2" gauge&period; If there is such a thing as a "standard" gauge size&comma; this is it&period; The 2-1&sol;2" gauge is by far the most common gauge that we sell and you will find hundreds of in-stock options to choose from&period; View the dimensional drawings if you need more information&period; Dimensional drawings for all of our gauges are found on every product page and provide the exact measurements&period;STEP 3&colon; ConnectionThere are two basic connection types for mounting&colon; back and lower&period; The back mount is what it sounds like&period; The connection protrudes from the back of the gauge&period; In a lower-mount &lpar;sometimes called a stem mount&rpar;&comma; the connection is on the bottom of the gauge&period; Which type you need will usually be pretty obvious&period; Manufacturers divide back mounts into "center back" and "lower back&comma;" &lpar;right in the middle of the back vs&period; down toward six-o'clock&rpar;&comma; but unless you're trying to fit the gauge into a tight space&comma; or mount it in a panel&comma; the difference usually doesn't matter&period;You also have to consider connection size&period; For 2-1&sol;2" dial sizes&comma; a 1&sol;4-inch NPT &lpar;National Pipe Thread&rpar; is by far the most common size&period; If you're replacing a gauge&comma; you want to be aware of the existing connection size&period; Other common connection sizes are 1&sol;8-inch NPT &lpar;for 1-1&sol;2" & 2" dials&rpar; and 1&sol;2 inch NPT &lpar;for 4" and greater dial sizes&rpar;&period;More helpful informationAccuracyAccuracy span is the single factor that has the most influence on price&comma; so you want to get a gauge that is accurate enough - but not more accurate than you need&period; Gauges are available with accuracies from &plus;&sol;-3&sol;2&sol;3&percnt; to 0&period;25&percnt; of span &lpar;ASME grade B to grade 3A&rpar;&period; Consider your application to determine accuracy needs&period; If the gauge is for your backyard pool&comma; you don't need a lot of accuracy and a "3-2-3" gauge should be just fine&period; These gauges are accurate to plus or minus 3&percnt; in the bottom third and top third of their range&comma; and within 2&percnt; in the middle third&period; If you need something a bit better than that&comma; a gauge with 1&period;5&percnt; accuracy good choice for applications where small differences in pressure aren't critical&period; Gauges with 1&period;5&percnt; accuracy will give you a more accurate reading &lpar;&plus;&sol;-1&period;5&percnt; across the range&rpar; than a 3-2-3&comma; but are still quite affordable&period;If you really do need to keep track of whether your system is at 59 PSI or 59&period;5 psi&comma; you need a higher accuracy gauge&comma; and we carry them&comma; all the way up to a level of 0&period;25&percnt;&period; If you have an application where accuracy is that critical&comma; you probably know it&period; If you aren't sure&comma; give us a call and we'll make sure you get the right gauge&period;Liquid-FilledThere are two reasons to fill a gauge with liquid &lpar;we generally use glycerine&rpar;&period; Liquid steadies the pointer and makes the gauge easier to read&period; The liquid also lubricates the internal parts of the gauge&comma; making it last longer&period; So if you have an application with a lot of vibration&comma; or want to get a longer life out of your gauge&comma; go for a liquid-filled case&period; We have three options available&colon; dry case&comma; glycerine filled and dry case-liquid fillable&period; "Dry case" gauges are not able to be filled with liquid&period; "Glycerine-filled" gauges are shipped filled with liquid&period; "Dry-case&comma; Liquid Fillable" gauges are for customers who prefer to fill their own gauges&period;Glycerine is the most common all-purpose liquid to use&period; If you need to use a gauge in extreme temperature conditions&comma; either very low &lpar;below -20F&sol;-29C&rpar; or very high &lpar;over 180F&sol;82C&rpar;&comma; call us for other options&period;Wetted PartsThe "wetted parts" of the gauge are the parts that come in contact with the process that is being measured &lpar;liquid&comma; air&comma; gas&comma; etc&rpar;&period; We have special materials for unusual applications &lpar;for example&comma; highly corrosive liquids&rpar; but by far the most common materials are brass and stainless steel&period; Brass is less expensive&comma; and is a great choice with non-corrosive gases or liquids &lpar;for example&colon; air&comma; water&comma; or gasoline&rpar;&period; Stainless steel stands up better to acid and alkaline substances and is more durable&period;

Tips 2 &colon;

Pressure Gauge Types Industrial Gauges &colon; Industrial quality heavy-duty sensing elements and case designs&comma; typically used in more demanding applications&period; These gauges usually have greater accuracy requirements than general purpose gauges&period; The industrial stainless steel type gauge is built for extended life and designed for harsh corrosive environments&period;

Commercial Gauges &colon; Often referred to as general purpose or equipment gauges&period; Though commercial gauges may have to be ruggedly constructed&comma; the service conditions are not expected to be severe&period; Designed for low cost without refinements&comma; they are frequently referred to as throw-away&quest; gauges since it is not economical to attempt repairs on this type of gauge&period; Most commercial gauges have a black ABS or painted steel case with brass internal parts and connection&period;

Process Gauges &colon; Process gauges combine the heavy-duty operating and construction requirements of industrial gauges with the more exacting accuracy and service life demands of many process applications&period; Designed for the chemical and petroleum processing industries&comma; the cases &lpar;typically 4-1&sol;2&quest; are made of corrosion resistant thermoplastic and offer a solid front&sol;blow out back safety case design&period;

Digital Gauges &colon; Industrial quality gauges with a digital display of the pressure or vacuum being measured&period; Digital readings are generally easier to read&comma; faster&comma; and more accurate than standard dial type pressure gauges&period; Digital gauges are typically battery powered&period;